Agree with the above
I would not hesitate at getting S/C kit for my car and not worry at all about noises, as long as what Mark as said you do not over do it when tuning it.
If only it was a little cheaper to buy then I would be getting it done tomorrow. I could buy a EVO with a huge amount of power but I do not like the cars so the zed to me seems like a good choice in increasing the power.
I will start saving